HelpPC 2.10 Quick Reference Utility Copyright 1991 David Jurgens

                       double tan( double y, double x )


       - prototype in math.h

       - returns arc tangent of x*2
       - used instead of atan when the resulting angle is near
         pi/2 or -pi/2

Esc or Alt-X to exit atan2 Home/PgUp/PgDn/End ←↑↓→